Simone Belmondo, Valentina Fiorilli, Jacob Pérez-Tienda, Nuria Ferrol, Roland Marmeisse, Luisa Lanfranco
Abstract
Arbuscular mycorrhizal fungi (AMF), which form an ancient and widespread mutualistic symbiosis with plants, are a crucial but still enigmatic component of the plant micro biome. Nutrient exchange has probably been at the heart of the success of this plant-fungus interaction since the earliest days of plants on land. To characterize genes from the fungal partner involved in nutrient exchange, and presumably important for the functioning of the AM symbiosis, genome-wide transcriptomic data obtained from the AMF Rhizophagus irregularis were exploited. A gene sequence, showing amino acid sequence and transmembrane domains profile similar to members of the PTR2 family of fungal oligopeptide transporters, was identified and called RiPTR2. The functional properties of RiPTR2 were investigated by means of heterologous expression in Saccharomyces cerevisiae mutants defective in either one or both of its di/tripeptide transporter genes PTR2 and DAL5. These assays showed that RiPTR2 can transport dipeptides such as Ala-Leu, Ala-Tyr or Tyr-Ala. From the gene expression analyses it seems that RiPTR2 responds to different environmental clues when the fungus grows inside the root and in the extraradical phase.
Pharmacology, Toxicology and Pharmaceutical Science
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1%
Business, Management and Accounting
1
1%
Other
3
4%
Unknown
15
21%
Attention Score in Context
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 December 2014.
All research outputs
#15,306,466
of 22,764,165 outputs
Outputs from Frontiers in Plant Science
#10,776
of 20,063 outputs
Outputs of similar age
#137,386
of 237,867 outputs
Outputs of similar age from Frontiers in Plant Science
#94
of 169 outputs
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